Round steel pipes and tubes

Gram Bangla Tubes Ltd (GBTL) manufactures round steel pipes and tubes in Sonargaon, Narayanganj, Bangladesh, in sizes from 12 to 3,600 mm OD, by electric resistance welding (ERW) up to 300 mm OD and by spiral submerged arc welding (SSAW) and longitudinal submerged arc welding (LSAW) for large diameters.

Round steel pipes and tubes from Gram Bangla Tubes Ltd. (GBTL) serve furniture, solar, water and construction buyers in Bangladesh. Sizes run from 12 mm to 3,600 mm OD. Furniture tubes span 12.5 to 38 mm OD. Solar posts come in 76.1 and 88.9 mm OD, plus a 114.3 mm OD torque tube blank on request.

Standard MS, GP and GI pipe is sold through district dealers, with bulk orders from 20 MT direct from the mill. SS 201 and SS 304 pipe runs from 12 to 100 mm OD. GBTL runs the only SSAW spiral pipe mill in Bangladesh. Spiral, LSAW, SS, solar and furniture pipe are sold on quote.

Solutions: Solar mounting, Construction and infrastructure, Furniture tubing, Automotive and mobility, Water and utilities

Pre-galvanized round steel pipes in a strapped bundle — Photos are representative. Finish and size may differ from the item shown.

Round pipe sizes

One row per catalog item. Open the item for its full specification, and weight per metre where a size table is published.

Round steel pipes and tubes: sizes, wall, length, finish and order route
Product	Size	Wall	Length	Finish	Order
Round Post 76.1 mm OD	76.1 mm OD	3.2 mm	6 m	Pre-galvanized (GP), MS black, Hot dip galvanized, on request	MOQ from 2 MT
Round Post 88.9 mm OD	88.9 mm OD	3.2 and 4.0 mm	6 m	Pre-galvanized (GP), MS black, Hot dip galvanized, on request	MOQ from 2 MT
Torque Tube Blank 114.3 mm OD	114.3 mm OD	3.6 and 4.5 mm	6 to 12 m	Pre-galvanized (GP), MS black, Hot dip galvanized, on request	MOQ from 2 MT
Round Tube 19.05 mm OD	19.05 mm OD	0.80 to 2.00 mm	Confirmed on quote	Cold rolled black, Pre-galvanized (GP)	MOQ from 1 MT
Round Tube 25.4 mm OD	25.4 mm OD	0.80 to 2.00 mm	Confirmed on quote	Cold rolled black, Pre-galvanized (GP)	MOQ from 1 MT
Round Tube 31.75 mm OD	31.75 mm OD	0.80 to 2.00 mm	Confirmed on quote	Cold rolled black, Pre-galvanized (GP)	MOQ from 1 MT
Round Tube 38.1 mm OD	38.1 mm OD	1.2 and 1.5 mm	Confirmed on quote	Cold rolled black, Pre-galvanized (GP)	MOQ from 1 MT
MS Round Pipe	12 to 300 mm OD	0.6 to 8.0 mm	Confirmed on quote	MS black	Through dealers · bulk from 20 MT
GP Round Pipe	12 to 165 mm OD	0.6 to 2.3 mm	Confirmed on quote	Pre-galvanized (GP)	Through dealers · bulk from 20 MT
GI Pipe	12 to 300 mm OD	1.0 to 8.0 mm	Confirmed on quote	Hot dip galvanized (GI)	Through dealers · bulk from 20 MT
SS Round Pipe	12 to 100 mm OD	0.35 to 3.0 mm	20 ft (6.1 m)	Stainless steel	MOQ on quote
Spiral Pipe (SSAW)	273 to 3,600 mm OD	3.0 to 25.0 mm	Confirmed on quote	Confirmed on quote	MOQ on quote
LSAW Steel Pipe	300 to 2,500 mm OD	3.0 to 17.0 mm	Confirmed on quote	Confirmed on quote	MOQ on quote

Round pipe questions

What sizes of round steel pipe does GBTL make in Bangladesh?

GBTL makes round steel pipe from 12 mm to 3,600 mm OD. MS round and GI pipe run from 12 to 300 mm OD, and GP round pipe from 12 to 165 mm OD. Spiral SSAW pipe covers 273 to 3,600 mm OD, and LSAW pipe covers 300 to 2,500 mm OD. Walls range from 0.35 mm on SS pipe to 25.0 mm on spiral pipe.

What is the difference between MS, GP and GI pipe?

MS pipe is uncoated mild steel and needs painting or coating for outdoor use. GP pipe is formed from strip that was zinc coated first, so cut ends and the weld seam need protection outdoors. GI pipe is hot dip galvanized after forming, which gives a heavier zinc layer inside and outside. GBTL sells all three through district dealers across Bangladesh.

Which round tube sizes does GBTL make for furniture?

GBTL makes furniture round tube from 12.5 to 38 mm OD, which is 1/2 to 1 1/2 inch; standard sizes include 19.05, 25.4, 31.75 and 38.1 mm OD. Furniture walls run from 0.80 to 2.00 mm. Both finishes, cold rolled black and GP pre-galvanized, are powder coat ready. The minimum order is 1 MT for standard furniture sizes.

Which infrastructure projects has GBTL supplied in Bangladesh?

Projects GBTL has supplied include the Padma Multipurpose Bridge, Dhaka Metro Rail, Hazrat Shahjalal International Airport Third Terminal and Rooppur Nuclear Power Plant.

Do MS, GP and GI pipe come in the same sizes?

MS round pipe and GI pipe run from 12 to 300 mm OD. GP round pipe runs from 12 to 165 mm OD. Wall ranges differ: MS 0.6 to 8.0 mm, GI 1.0 to 8.0 mm, GP 0.6 to 2.3 mm.